yellowing on leaf tips

[DR. Budlove]

hey guys need some help. the of the leaves of some of my plants ahve turned yellow. it started in the upper or younger leaves and then moved down to the lowwer leaves. i read up on all the nutrient defs. and the only ones that fit this description is sulfur and magnesium. if someone could help me that would be great thanks

[DevilDawg]

We'd be happy to help.But need more info.
A-how old is it and what stage is it in(vege or flower and how many weeks of which)
B-what ya feeding it
C-is it just the tips or necrosis also?

[DR. Budlove]

they are about 40 days old and have been flowering for about a week now. i'm was feeding them miracle during veg. stage then switched to super bloom when they started to flower.only 2 of my 8 plants are doing this. they seem to be flowering fine and no necrosis on leaves just the yellow tips and the tips have begun to turn up around the yellowing. i did a flush about a week ago in hopes it would help but it did't seem to help the tips. but other than about 8 leaves on each of the 2 plants they seem to be doing great. ph is at about 6.5 to 6 in each plant.

[J R Puffnstuff]

that occurs on a ph imbalance sometimes but your Ph seemds to be ok.

I would say its Mag.

The best way to fix that is CALMAG by botanicare--its pretty safe.

I have used epsom salt--but its to easy to overdose and you get a worse problem.

You could also throw some superthrive in there.

Good luck.

I dont personally get that as much or at all when I switched to  using more organic nutes.

[DR. Budlove]

thanks for the info. i would like to switch to all organic myself but there aren't any stores or nurseys around here that carry it. only thing i can find is miracle grow organic soil no one around me carries the fox farm line or anything for that matter. i guess organics just haven't caught on here.

[Muddy Waters]

thanks for the info. i would like to switch to all organic myself but there aren't any stores or nurseys around here that carry it. only thing i can find is miracle grow organic soil no one around me carries the fox farm line or anything for that matter. i guess organics just haven't caught on here.

I have the same problem in my area, no place to buy organics.  I buy mine from these people http://www.plantlightinghydroponics.com/plant-nutrients-c-81.html.  Best prices and cheapest shipping I've found.

Also, make sure your light isn't too close to the plants, but that does sound like over feeding to me.